/Engine/Source/Editor/SceneOutliner/Public/SceneOutlinerStandaloneTypes.h
[TOptional](API\Runtime\Core\IO\TOptional)< [FLinearColor](API\Runtime\Core\Math\FLinearColor) > GetForegroundColor ( const [ISceneOutlinerTreeItem](API\Editor\SceneOutliner\ISceneOutlinerTreeItem) & TreeItem ) const